https://github.com/python/cpython/commit/4f6f3ee8d3710fef102071c53919a9af7a28613b
commit: 4f6f3ee8d3710fef102071c53919a9af7a28613b
branch: 3.14
author: Miss Islington (bot) <31488909+miss-isling...@users.noreply.github.com>
committer: ambv <luk...@langa.pl>
date: 2025-07-21T11:58:57+02:00
summary:

[3.14] gh-136852: Emscripten: Add PYTHON_NODE_VERSION environment variable 
(GH-136853) (GH-136907)

To choose the node version we use. Together with:
https://github.com/python/buildmaster-config/pull/614
closes GH-136852.
(cherry picked from commit aec7f5f8b2e8b5e02869cdb4e1f8a9ef87c9f953)

Co-authored-by: Hood Chatham <roberthoodchat...@gmail.com>

files:
M Tools/wasm/emscripten/__main__.py

diff --git a/Tools/wasm/emscripten/__main__.py 
b/Tools/wasm/emscripten/__main__.py
index c0d58aeaadd2cf..1b31e36dd890b3 100644
--- a/Tools/wasm/emscripten/__main__.py
+++ b/Tools/wasm/emscripten/__main__.py
@@ -206,6 +206,17 @@ def configure_emscripten_python(context, working_dir):
         sysconfig_data += "-pydebug"
 
     host_runner = context.host_runner
+    if node_version := os.environ.get("PYTHON_NODE_VERSION", None):
+        res = subprocess.run(
+            [
+                "bash",
+                "-c",
+                f"source ~/.nvm/nvm.sh && nvm which {node_version}",
+            ],
+            text=True,
+            capture_output=True,
+        )
+        host_runner = res.stdout.strip()
     pkg_config_path_dir = (PREFIX_DIR / "lib/pkgconfig/").resolve()
     env_additions = {
         "CONFIG_SITE": config_site,

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